Cygnus. Canon RF 16mm STM F2.8. 105 min

 Posted: Mar 1st, 2026
Technical Info
Telescope/Lens: Canon RF 16mm F2.8 STM
Camera: Canon R6a
Mount: Sky Watcher Star Adventurer
Software: PixInsight
Exposure:
669 x 13" ISO/Gain: 3200 - Optolong L-Pro Canon EOS-R Clip in
 Sofrino, Russia
 Jul 27th, 2025
2 h 25 m
10
Resolution: 3076x2132 px
Scale: 2916 KB
July. The start of the season, a few hours each night.

F/2.8. An inexpensive lens. Aperture wide open.

Near Moscow. July. The Milky Way is not visible to the naked eye. It's surprising anything showed up in the photo at all.
A crop of the center, because I didn't have a clear patch of sky at 16mm without trees, houses, etc. I had to crop them out.

Processing:
PixInsight. WBPP crashed with an out-of-memory error (too many files, 64 GB of RAM wasn't enough). I had to use the LN file for processing (LN reference generation).
Crop. Graxpert BGE. BlurX, NoiseX, HT_Stretch, StarX.
Starless: Graxpert BGE, red mask.
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